Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '13f736e9a390aaf7b44a5aff366b2e320f503c1f4220ecacba7b023fd31b34c3' 
  AND token = 'qb3VXL48a4+EBo7RGHIGNZ3tZa2jeQNBgTzxhZVNTj4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}